how to change users password?

hey,

I've lost the password for a few user accounts and cannot log into their virtualmin accounts to change them.

Is there anyway for me to change the their passwords through the virtualmin module in webmin? I can see how I can add domains to their account etc but not change their password.

I'm aware I can change their system password but this will not change their mysql, postfix, proftpd passwords etc. Is there a way to do this all in one?

Thanks for any help.